Townscape, Inc.

Mākaha Valley Flood Study

TOWNSCAPE worked with the State Department of Land and Natural Resources Engineering Department to conduct a flood study for Mākaha Valley. The study included stakeholder consultations with community members, businesses, land owners, state and city agencies, and elected officials, a series of focus group and larger community meetings.

Hydrological and hydraulic modeling calculated flood flows, and analysis work identified strategies and projects that will reduce flooding of homes and businesses in the valley.

Houses located at the base of steep valley walls near natural drainage ways

Field survey of ditch and berm behind Mauna ʻOlu Estates subdivision

Ditch built to protect Mākaha Valley Towers was damaged during a rain storm in 1996